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Modeling of ABS latex coagulation processes
Author(s) -
Chung ChangBock,
Park SooHo,
Han InSu,
Seo YoungHyo,
Yang ByongTae
Publication year - 1998
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690440604
Subject(s) - dimensionless quantity , coagulation , breakup , mechanics , particle size , particle (ecology) , particle size distribution , population , materials science , turbulence , population balance equation , thermodynamics , mathematics , chemistry , chemical engineering , physics , engineering , psychology , oceanography , demography , psychiatry , sociology , geology
The mathematical models of acrylonitrile–butadiene–styrene (ABS) latex coagulation processes that show the effect of major operation variables on the particle‐size distribution of recovered resins were derived to provide a guideline for process improvement to reduce the content of fine particles in the product. Kinetic equations for the coagulation and breakup of particles taking place in a turbulent flow field were incorporated into the population balance models for batch and continuous processes. A dimensional analysis for the process models leads to two dimensionless groups, η c and η b , that represent the relative intensity of the coagulation and breakup phenomena. The η c /η b ratio is designated as a design variable for controlling the particle‐size distribution in the steady‐state operation of the coagulation processes. This role is demonstrated by numerical simulation where increasing the ratio shifted the particle‐size distribution toward large particles. The estimates of η c /η b obtained for a set of batch experiments also confirm that fine particles can be reduced by setting the operation variables to increase the ratio.